object NoticeDemo01  {
  def main(args: Array[String]): Unit = {
    println(max(1,2))
    println(max(4,3))
    println(max(1,2,3))
    println(max(6,5,4))
  }
  def max(n1: Int, n2: Int): Int = {
    if (n1 > n2) return n1 else n2
  }
  def max(n1: Int, n2: Int, n3: Int): Int = {
    var res = if (n1 > n2) n1 else n2
    res = if (n3 > res) n3 else res
    return res
  }
}